Question

Milk ring test is used to detect
A)The presence of agglutinating antibodies in dairy cattle.
B)The presence of antigen in dairy cattle.
C)The presence of enterotoxin in dairy cattle.
D)None of the above.

Answer 1

Hint: There is a simple and sensitive procedure, known as the milk ring test, to detect Brucella contamination in milk. A Brucella antigen stained with hematoxylin is applied to the milk in this assay. The antigen interacts with any agglutinins in the milk that are borne by the cream as it grows to the top.

Complete answer:
 The milk ring test in dairies is also called the Brucellosis Ring Test (BRT). In the milk batch, a suspension of the killed Brucella pathogen is added with hematoxylin and stored in a water bath. The milk sample will produce antibodies if the animal is contaminated with Brucellosis. The test would then be positive and, as the cream grows, a bluish ring is formed on the cream line. No colored ring is formed if antibodies are absent, and the milk stays uniformly blue.

There are some effective vaccines available nowadays to combat the disease in cattle. The formally accepted S19 and RB51 are B. Abortus vaccine strains are used more commonly and reliably globally to combat bovine brucellosis.

Hence, the correct answer is option (A)

Note: Brucellosis is an outbreak of bacteria that spreads from animals to humans. Individuals are more often affected when consuming fresh or unpasteurized dairy items. Brucellosis-causing bacteria may also propagate through the air or through close contact with infected animals.